High-strength pumpable concrete for towers that touch the sky.
Engineered for buildings 15+ floors. Pumps reliably to 200m+. Sustained workability. Documented strength gain. Trusted on Bangalore's tallest projects.
Inside Alpha High-Rise
Alpha High-Rise is engineered for vertical structures where every cubic meter must travel high, place perfectly, and harden to designed strength. We optimize the cement-aggregate-admixture system to deliver concrete that pumps to 200m+, retains workability for 90+ minutes, and consistently exceeds design strength.
The challenge in high-rise concrete isn't just strength — it's the combination. The mix must be fluid enough to pump through 150m of pipe under high pressure without segregating, cohesive enough to discharge cleanly into congested rebar, and dense enough to develop M60-M80 strength reliably. Most RMC suppliers can do strength OR pumpability. Alpha High-Rise does both.
Every Alpha High-Rise mix uses a calibrated combination of OPC 53 grade cement, GGBS or fly ash for workability and durability, polycarboxylate ether (PCE) superplasticizer, optimized aggregate gradation, and grade-specific water-cement ratios maintained between 0.30 and 0.42. Cube test data from the last 12 months shows mean strength exceeding design fck by 8-12 N/mm² with coefficient of variation below 8%.
Built for vertical construction
PCE-based superplasticizer system maintains slump-flow during long pump runs. Aggregate gradation optimized to prevent line blockage. Tested on 60-floor pours.
Retarder admixture calibrated for Bangalore's hot weather. Slump retention chart published per mix. Maintains pumpability even with traffic delays.
Project-specific designs for column requirements up to M80. Cube data exceeds design fck consistently. Verified through 7-day and 28-day testing.
20mm + 10mm + crushed sand combination engineered for pumpability and strength. Gradation curves verified per IS 383. No segregation under pressure.
Each high-rise project gets a custom mix design with trial cubes, slump retention curve, and pumping trial data. Approved by your structural consultant before supply.
Fosroc, BASF, or Sika polycarboxylate ether superplasticizer + retarder + GGBS/fly ash blend. Material test certificates for every batch.
Built for these projects
30+ floor towers, premium apartment complexes, mixed-use developments. Columns, shear walls, structural slabs.
Office towers, IT campuses, integrated commercial developments. Tall column lifts, transfer slabs, post-tensioned slabs.
Multi-story healthcare facilities, educational institutions, hospitality. Where structural integrity over decades is non-negotiable.
Large warehouse + office combinations, manufacturing campuses with tall columns, parking structures.
Documented pours with Alpha High-Rise
The fine print, in full
| Compressive Strength (28-day) | 40 – 80 N/mm² (per grade) |
| Cement Type | OPC 53 grade (Ultratech / Ramco / ACC) |
| Cement Content | 380 – 450 kg/m³ |
| Mineral Admixture | GGBS 25-40% or Fly Ash 20-30% |
| W/C Ratio | 0.30 – 0.42 (per grade) |
| Coarse Aggregate | 20mm + 10mm crushed granite, IS 383 compliant |
| Fine Aggregate | Manufactured sand (M-sand), zone II |
| Chemical Admixture | PCE superplasticizer (Fosroc Auramix / BASF Glenium / Sika ViscoCrete) |
| Slump at Point of Placement | 150 – 180 mm |
| Slump Retention | 90 minutes minimum |
| Density | 2380 – 2420 kg/m³ |
| Setting Time (initial) | 4 – 6 hours (extended for hot weather) |
| Air Content | 1.5 – 2.5% |
| Pumping Height Demonstrated | Up to 200m vertical |
| Pipe Diameter Recommended | 125mm minimum |
| Code Reference | IS 456:2000, IS 10262:2019, IS 9103, IS 383 |
Alpha High-Rise mix designs
Resources by role
- Use Alpha High-Rise for any structure 15+ floors: premium residential, commercial towers, hospitals, IT parks.
- Pre-engineered for performance, documented for compliance, priced for project economics.
- Lead time: Standard 24-hour notice. Custom designs: 7-14 days for trial.
- Pricing: Contact for project quote.
- BOQ: "M[X] grade RMC, pumpable, IS 456:2000 compliant, W/C ≤ [X], slump 150-180mm at point of placement, 90-min retention, from Alpha Concrete or equivalent."
- Mix design code: AC-HR-[Grade]
- Documentation: Mix design certificate, cube test reports (7d + 28d), batch tickets, MTCs for cement/aggregate/admixture.
- Slump on receipt: 150-180mm ±25mm
- Cube samples: As per IS 456:2000 Table 11. Curing: minimum 14 days.
- Pump priming: First 0.5 m³ used for line lubrication (discard or use non-structural).
- Construction joint: Plan if pour interrupts >2 hours.
About Alpha High-Rise
Ready to specify Alpha High-Rise?
Talk to an Alpha engineer about your project. We'll match the right grade and dispatch plan.
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The specifications shown represent typical ranges for Alpha Concrete's product family. Actual mix designs are project-specific and subject to verification by our QC team. Quoted specifications must be confirmed against actual lab results before commercial commitment. Contact our QC team for project-specific mix design certification.